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1 | |
2 | // (C) Copyright Edward Diener 2011-2015 | |
3 | // Use, modification and distribution are subject to the Boost Software License, | |
4 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
5 | // http://www.boost.org/LICENSE_1_0.txt). | |
6 | ||
7 | #if !defined(BOOST_VMD_IS_LIST_HPP) | |
8 | #define BOOST_VMD_IS_LIST_HPP | |
9 | ||
10 | #include <boost/vmd/detail/setup.hpp> | |
11 | ||
12 | #if BOOST_PP_VARIADICS | |
13 | ||
14 | #include <boost/vmd/detail/is_list.hpp> | |
15 | ||
16 | /* | |
17 | ||
18 | The succeeding comments in this file are in doxygen format. | |
19 | ||
20 | */ | |
21 | ||
22 | /** \file | |
23 | */ | |
24 | ||
25 | /** \def BOOST_VMD_IS_LIST(sequence) | |
26 | ||
27 | \brief Determines if a sequence is a Boost pplib list. | |
28 | ||
29 | The macro checks that the sequence is a pplib list. | |
30 | It returns 1 if it is a list, else if returns 0. | |
31 | ||
32 | sequence = input as a possible Boost PP list. | |
33 | ||
34 | returns = 1 if it a list, else returns 0. | |
35 | ||
36 | The macro will generate a preprocessing error if the input | |
37 | is in the form of a list but its end-of-list marker, instead | |
38 | of being an identifier, is a preprocessor token which VMD cannot parse, | |
39 | as in the example '(anything,&BOOST_PP_NIL)' which is a valid tuple but | |
40 | an invalid list. | |
41 | ||
42 | */ | |
43 | ||
44 | #define BOOST_VMD_IS_LIST(sequence) \ | |
45 | BOOST_VMD_DETAIL_IS_LIST(sequence) \ | |
46 | /**/ | |
47 | ||
48 | /** \def BOOST_VMD_IS_LIST_D(d,sequence) | |
49 | ||
50 | \brief Determines if a sequence is a Boost pplib list. Re-entrant version. | |
51 | ||
52 | The macro checks that the sequence is a pplib list. | |
53 | It returns 1 if it is a list, else if returns 0. | |
54 | ||
55 | d = The next available BOOST_PP_WHILE iteration. | |
56 | sequence = input as a possible Boost PP list. | |
57 | ||
58 | returns = 1 if it a list, else returns 0. | |
59 | ||
60 | The macro will generate a preprocessing error if the input | |
61 | is in the form of a list but its end-of-list marker, instead | |
62 | of being an identifier, is a preprocessor token which VMD cannot parse, | |
63 | as in the example '(anything,&BOOST_PP_NIL)' which is a valid tuple but | |
64 | an invalid list. | |
65 | ||
66 | */ | |
67 | ||
68 | #define BOOST_VMD_IS_LIST_D(d,sequence) \ | |
69 | BOOST_VMD_DETAIL_IS_LIST_D(d,sequence) \ | |
70 | /**/ | |
71 | ||
72 | #endif /* BOOST_PP_VARIADICS */ | |
73 | #endif /* BOOST_VMD_IS_LIST_HPP */ |